Delta Electronics LCP-2488B4HDRx manual Optical Characteristics

Optical Characteristics

Transmitter

(VCC=3.3V ± 5%, Data Rate=2488Mb/sec, PRBS=223-1 NRZ)

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Output Optical Power (Avg.)	P	-10		-3	dBm
Optical Extinction Ratio	ER	8.2			dB
Center Wavelength	λC	1266	1310	1360	nm
Spectral Width	σ			4	nm
Optical Rise/ Fall Time	tr/tf			150/200	psec	1
Relative Intensity Noise	RIN			-120	dB/Hz
Total Jitter (Peak to Peak)	TJPP			50	ps
Output Eye	Compliant with GR-253 and ITU recommendation G.957
Receiver
(VCC=3.3V ± 5%, Data Rate=2488Mb/sec, PRBS=223-1 NRZ)
Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Sensitivity (Avg.)	PS			-18	dBm	2
Input Optical Wavelength	λ	1266	1310	1360	nm
LOS-Deasserted (Avg.)	PA			-20	dBm
LOS-Asserted (Avg.)	PD	-45			dBm
LOS-Hysteresis	PA-PD	0.5			dB
Overload	P0	-3			dBm
Reflectance	r			-12	dB

Notes:

1.These are unfiltered 20%~80% values

2.The sensitivity is provided at a BER of 1×10-12or better with an input signal consisting of 2488Mb/s, 223-1 PRBS and ER=9dB.

Amplitude

1.25
1.00	Mean level of logical “1”
0.75
0.25
0.00	Mean level of logical “0”
-0.25

Time

Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957

Mask of the eye diagram for the optical transmit signal

3	2008/3/14
	Rev. 0B
DELTA ELECTRONICS, INC.	www.deltaww.com